A water balloon with a mass of 3g is thrown at your teacher with an acceleration of 30m/s². How much force is applied?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)